Higher concentrations of ozone is characterised as

Options

A. Dangerously explosive
B. Harmless gas
C. Both (1) and (2)
D. None of these

Answer

To answer the question "Higher concentrations of ozone is characterised as", we can follow these steps:

### Step 1: Understand Ozone
Ozone (O₃) is a molecule composed of three oxygen atoms. It exists both in the Earth's stratosphere and at ground level, but its effects differ significantly depending on its concentration and location.

**Hint:** Consider the different roles ozone plays in the atmosphere and its effects on health and the environment.

### Step 2: Identify the Effects of High Ozone Concentration
High concentrations of ozone, particularly at ground level, can lead to several harmful effects. It is known to be a potent oxidizing agent that can damage living tissues.

**Hint:** Think about how ozone interacts with biological systems and what symptoms or damage it might cause.

### Step 3: Effects on Vegetation
One of the primary concerns with high levels of ozone is its impact on vegetation. Ozone can cause visible injury to plants, leading to changes in leaf color and overall plant health.

**Hint:** Recall how ozone affects plant physiology and what visible symptoms might indicate damage.

### Step 4: Health Implications
In addition to affecting plants, high concentrations of ozone can also have serious health implications for humans. It is known to exacerbate respiratory diseases, including asthma.

**Hint:** Consider the connection between air quality and respiratory health, particularly in urban areas.

### Step 5: Conclusion
Based on the above points, we can conclude that higher concentrations of ozone are characterized as harmful to both vegetation and human health, leading to conditions such as asthma and visible damage to plants.

**Final Answer:** Higher concentrations of ozone are characterized as harmful and potentially explosive due to their adverse effects on vegetation and human health.

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